A prefabricated steel structure pile-beam connection structure

Abstract

This utility model proposes a prefabricated steel structure pile-beam connection structure, involving the technology of connecting steel pipe piles and fixing steel sections. Specifically, it discloses a pair of corbels, both of which are installed on the outer wall of the steel pipe pile. Each corbel has a first slot that matches the bottom plate of the steel section. A limiting component for restricting the steel section is installed on the outer wall of the steel pipe pile. A connecting steel plate is installed between the two corbels, and the connecting steel plate has a fixing structure for fixing the steel section. The steel section beam is initially positioned by the first slot on the corbel and the second slot on the limiting component, and then the main fixing is completed by tightening the screw. The construction is convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of connecting steel pipe piles and fixing steel sections, and more specifically, to a prefabricated steel structure pile-beam connection structure. Background Technology

[0002] In existing technologies, pile-beam joints mostly use rigid connections such as on-site welding, for example, directly welding steel beams to the outer wall of steel pipe piles. This method is constrained by the on-site environment (such as humidity and wind speed), making it difficult to guarantee welding quality and easily producing defects such as porosity and incomplete fusion. Furthermore, high-altitude welding construction is inefficient and carries high safety risks.

[0003] Furthermore, regarding the outer components of the steel pipe piles, due to the circular structure of the outer surface, there are issues with the small contact area and stress concentration at the connection when they intersect with the steel distribution beam. Additionally, measures such as adding steel plates to increase the contact area are required during welding. Under uneven stress, this can easily lead to weld detachment and connection failure. Therefore, it is necessary to develop a semi-steel hinged connection, which is beneficial to the overall stability of prefabricated steel structures. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated steel structure pile-beam connection structure, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a prefabricated steel structure pile-beam connection structure, including a pair of corbels, both corbels are installed on the outer wall of the steel pipe pile, each corbel has a first slot that matches the bottom plate of the steel section, a limiting member for restricting the steel section is installed on the outer wall of the steel pipe pile, a connecting steel plate is installed between the two corbels, and a fixing structure for fixing the steel section is provided on the connecting steel plate.

[0007] In some technical solutions of this utility model, the fixing structure includes a screw rod installed on the connecting steel plate, one end of the screw rod abutting against the profile steel, and a fastening nut threadedly connected to the outer side wall of the screw rod. The fastening nut abuts against the side of the connecting steel plate facing the steel pipe column.

[0008] In some technical solutions of this utility model, there are two sets of fixing structures, and the two sets of fixing structures are installed sequentially on the side wall of the connecting steel plate along the axis of the steel pipe pile.

[0009] In some technical solutions of this utility model, an anti-slip nut that abuts against the fastening nut is installed on the outer side wall of the screw, and a first washer is provided between the anti-slip nut and the fastening nut.

[0010] In some technical solutions of this utility model, a second washer is provided between the fastening nut and the connecting steel plate.

[0011] In some technical solutions of this utility model, a back rib steel plate is installed on the side wall of the connecting steel plate away from the steel pipe pile along its length direction, and several stiffening steel plates are symmetrically installed on the two side walls of the back rib steel plate along its length direction, and the stiffening steel plates are fixedly connected to the connecting steel plate.

[0012] In some technical solutions of this utility model, the limiting member is a locking plate, which is located between two brackets, and the side wall of the locking plate is provided with a second locking slot that is adapted to the steel profile.

[0013] In some technical solutions of this utility model, the width of the second bayonet is greater than the thickness of the steel base plate.

[0014] Compared with the prior art, this utility model has at least the following advantages or beneficial effects: the steel beam is initially positioned by the first latch on the corbel and the second latch on the limiting member, and then the main fixation is completed by tightening the screw, making construction convenient and efficient; the bottom plate of the steel beam is embedded in the first latch of the corbel, transferring most of the vertical load to the corbel and the steel pipe pile, avoiding excessive shear force on the connecting bolts, and making full use of the bearing capacity of the steel pipe pile itself; the screw presses the bottom plate of the steel beam against the outer wall of the steel pipe pile through pre-tightening force, which, together with the first latch on the corbel and the second latch on the limiting member, can effectively prevent the steel beam from falling off; the anti-slip nut and the fastening nut form a reliable anti-loosening structure, effectively resisting the risk of loosening caused by vibration and impact loads. Attached Figure Description

[0015] Figure 1 This is a top view schematic diagram of the installation structure of the medium-sized steel and steel pile pipe of this utility model.

[0016] Figure 2 This is a front view schematic diagram of the installation structure of the medium-sized steel and steel pile pipe of this utility model.

[0017] Figure 3 This is a side view schematic diagram of the installation structure of the medium-sized steel and steel pile pipe of this utility model.

[0018] Figure 4 This is a front view structural diagram of the cow leg in this utility model.

[0019] Attached reference numerals: 1. Steel pile pipe; 2. Section steel; 3. Bracket; 4. Connecting steel plate; 5. Screw rod; 6. Positioning plate; 8. Stiffening steel plate; 9. Back rib steel plate; 10. Anti-slip nut; 11. Fastening nut. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0022] Example

[0023] This utility model provides a prefabricated steel structure pile-beam connection structure, such as Figures 1-4 As shown, the system includes paired corbels 3, both of which are welded to the outer wall of the steel pipe pile. Each corbel 3 has a first latch that matches the base plate of the steel section 2. The first latch positions the base plate of the steel section 2 during installation, restricts the vertical and lateral displacement of the steel section 2, and directly transfers the load from the steel section 2 to the corbels 3 and the steel pipe pile. This ensures the stability of the steel section 2 during installation and transfers the rear earth pressure load to the steel pipe pile during operation. The outer wall of the steel pipe pile is equipped with devices to restrict the steel section... The limiting component of section 2 mainly resists the torsional movement of section 2 and provides lateral and torsional constraints; a connecting steel plate 4 is installed between the two brackets 3, and the connecting steel plate is provided with a fixing structure for fixing section 2. The connecting steel plate 4 is fixedly connected to the brackets 3 on both sides by welding, which increases the rigidity of the connection area formed by the two brackets 3; the fixing structure applies a clamping force to the bottom plate of section 2, and uses the bolt preload to generate friction force, which restricts the upward displacement (pull-out) and lateral displacement of section 2, and provides additional torsional resistance.

[0024] The installation process of the steel section 2: Two pairs of brackets 3 are pre-installed on the outer wall of the steel pipe pile. Then, the bottom plate of the steel section 2 (e.g., an H-beam) is placed in the first slot on these two brackets 3. At this time, the bottom plate of the steel section 2 is restricted within the first slot, and a limiting device is installed on the outer wall of the steel pipe pile. The limiting device serves to restrain the movement of the steel section 2 within the connecting plane (mainly torsional movement). A connecting steel plate 4 is installed between the two brackets 3. The fixing structure on the connecting steel plate 4 (e.g., installing screws 5, installing second washers and tightening fastening nuts 11, installing first washers and anti-slip nuts 10) is operated to tightly press the bottom plate of the steel section 2, thus fixing the steel section 2 to the connecting steel plate 4. The connecting steel plate 4, the fixing structure, and the limiting device together provide the steel section 2 with resistance to displacement and torsion.

[0025] In some technical solutions of this utility model, the fixing structure includes a screw rod 5 installed on the connecting steel plate 4. One end of the screw rod 5 abuts against the steel section 2. A fastening nut 11 threadedly connected to the outer wall of the screw rod 5 is provided therewith. The fastening nut 11 abuts against the side of the connecting steel plate 4 facing the steel pipe column. The preload is generated by the bolt tightening principle, which causes the screw rod 5 to generate an axial thrust. This thrust presses the steel section 2 tightly against the outer wall of the steel pile cylinder. The static friction generated on the material surface resists possible loosening and displacement of the steel section 2.

[0026] The specific operation method for fixing the structure is as follows: pass the screw 5 through the connecting steel plate 4, and then put the second washer, the fastening nut 11, the first washer and the anti-slip nut 10 on the screw 5 at the end of the connecting steel plate 4 facing the steel pipe pile in sequence. Tighten the fastening nut 11 and adjust the screw 5 so that one end of it abuts against the bottom plate of the steel section 2. When the operator tightens the fastening nut 11, it forces the screw 5 to move on the side of the connecting steel plate 4 facing the steel pipe pile and then abut against the bottom plate of the steel section 2, thus pressing the steel section 2.

[0027] In some technical solutions of this utility model, an anti-slip nut 10 is installed on the outer side wall of the screw 5 to abut against the fastening nut 11. A first washer is also provided between the anti-slip nut 10 and the fastening nut 11. The anti-slip nut 10 and the fastening nut 11 form a double nut locking structure. Through the mutual resistance of the threaded engagement force between the two nuts, the fastening nut 11 is effectively prevented from automatically loosening under vibration or impact load.

[0028] In some technical solutions of this utility model, the number of fixing structures is two sets, which are sequentially installed on the side wall of the connecting steel plate 4 along the axis of the steel pipe pile. Using two sets of fixing structures increases the number of fixing points, making the distribution of the constraint force applied to the steel section 2 more uniform. Furthermore, the two fixing structures provide multi-point constraint along the beam axis, which can better control the local deformation and possible warping of the beam, and improve the connection stiffness and stability of the structure.

[0029] In some technical solutions of this utility model, several back rib steel plates 9 are installed along the length of the side wall of the connecting steel plate 4 away from the steel pipe pile, and several stiffening steel plates 8 are symmetrically installed along the length of the two side walls of the back rib steel plates 9. The stiffening steel plates 8 are welded perpendicularly to the adjacent connecting steel plate 4 and back rib steel plates 9 respectively. After the stiffening steel plates 8, back rib steel plates 9 and connecting steel plate 4 are combined into an integral structure, the strength and bending stiffness of the connecting steel plate 4 are greatly increased.

[0030] In some technical solutions of this utility model, the limiting component is a locking plate 6, which is located between two brackets 3. The side wall of the locking plate 6 is provided with a second locking slot adapted to the steel section 2. When the lower part of the bottom plate of the steel section 2 is placed in the first locking slot of the bracket 3, the second locking slot of the locking plate 6 is locked towards the upper part of the bottom plate of the steel section 2. This is equivalent to providing an additional positioning point for the steel section 2 in the horizontal plane (perpendicular to the beam axis). When a horizontal force is applied, the bottom plate of the steel section 2 will contact the side wall of the second locking slot of the locking plate 6, directly bearing and transmitting the horizontal force, ensuring the stability of the structure during the installation of the steel section 2.

[0031] In some technical solutions of this utility model, the width of the second snap-fit ​​is greater than the thickness of the base plate of the steel section 2. This allows for a certain gap (tolerance fit) in the installation of the base plate of the steel section 2. This gap allows for changes in structural dimensions due to manufacturing errors, thermal expansion and contraction, or minor deformations, preventing installation failure due to dimensional jamming or excessive assembly stress. It also prevents the snap-fit ​​from rigidly locking the steel section 2 under normal temperature changes or minor deformations due to perfect dimensional matching without gaps, thus avoiding unnecessary temperature stress or constraint stress and ensuring normal structural operation.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fabricated steel structure pile beam connecting structure, characterized in that, The system includes a pair of brackets (3), both brackets (3) are installed on the outer wall of the steel pipe pile. Each bracket (3) has a first slot that matches the bottom plate of the steel section (2). A limiting member for restricting the steel section (2) is installed on the outer wall of the steel pipe pile. A connecting steel plate (4) is installed between the two brackets (3). The connecting steel plate has a fixing structure for fixing the steel section (2).

2. The fabricated steel structure pile-beam connecting structure according to claim 1, characterized in that, The fixing structure includes a screw (5) installed on the connecting steel plate (4), one end of the screw (5) abutting against the steel section (2), and a fastening nut (11) threadedly connected to the outer side wall of the screw (5), the fastening nut (11) abutting against the side of the connecting steel plate (4) facing the steel pipe column.

3. The fabricated steel structure pile-beam connecting structure according to claim 2, characterized in that, The number of fixed structures is two sets, and the two sets of fixed structures are installed sequentially on the side wall of the connecting steel plate (4) along the axis of the steel pipe pile.

4. The fabricated steel structure pile-beam connecting structure according to claim 2, characterized in that, An anti-slip nut (10) is installed on the outer side wall of the screw (5) to abut against the fastening nut (11).

5. The fabricated steel structure pile-beam connecting structure according to claim 1, characterized in that, The connecting steel plate (4) has a back rib steel plate (9) on the side wall away from the steel pipe pile along its length direction. Several stiffening steel plates (8) are symmetrically installed on the two side walls of the back rib steel plate (9) along its length direction. The stiffening steel plates (8) are fixedly connected to the connecting steel plate (4).

6. The fabricated steel structure beam-pile connecting structure according to any one of claims 1-5, characterized in that, The limiting component is a locking plate (6), which is located between two brackets (3). The side wall of the locking plate (6) is provided with a second locking slot that is compatible with the steel section (2).

7. The fabricated steel structure beam-pile connecting structure according to claim 6, characterized in that, The width of the second bayonet is greater than the thickness of the bottom plate of the steel section (2).

Images